153 lines
7.0 KiB
JSON
153 lines
7.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-33416",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-03-19T17:02:34.172Z",
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"datePublished": "2026-03-26T16:48:54.174Z",
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"dateUpdated": "2026-04-01T03:55:17.603Z"
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},
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"containers": {
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"cna": {
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"title": "LIBPNG has use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-416",
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"lang": "en",
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"description": "CWE-416: Use After Free",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/pnggroup/libpng/security/advisories/GHSA-m4pc-p4q3-4c7j",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/pnggroup/libpng/security/advisories/GHSA-m4pc-p4q3-4c7j"
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},
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{
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"name": "https://github.com/pnggroup/libpng/pull/824",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/pnggroup/libpng/pull/824"
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},
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{
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"name": "https://github.com/pnggroup/libpng/commit/23019269764e35ed8458e517f1897bd3c54820eb",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/pnggroup/libpng/commit/23019269764e35ed8458e517f1897bd3c54820eb"
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},
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{
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"name": "https://github.com/pnggroup/libpng/commit/7ea9eea884a2328cc7fdcb3c0c00246a50d90667",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/pnggroup/libpng/commit/7ea9eea884a2328cc7fdcb3c0c00246a50d90667"
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},
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{
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"name": "https://github.com/pnggroup/libpng/commit/a3a21443ed12bfa1ef46fa0d4fb2b74a0fa34a25",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/pnggroup/libpng/commit/a3a21443ed12bfa1ef46fa0d4fb2b74a0fa34a25"
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},
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{
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"name": "https://github.com/pnggroup/libpng/commit/c1b0318b393c90679e6fa5bc1d329fd5d5012ec1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/pnggroup/libpng/commit/c1b0318b393c90679e6fa5bc1d329fd5d5012ec1"
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}
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],
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"affected": [
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{
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"vendor": "pnggroup",
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"product": "libpng",
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"versions": [
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{
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"version": ">= 1.2.1, < 1.6.56",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-03-26T16:48:54.174Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.2.1 through 1.6.55, `png_set_tRNS` and `png_set_PLTE` each alias a heap-allocated buffer between `png_struct` and `png_info`, sharing a single allocation across two structs with independent lifetimes. The `trans_alpha` aliasing has been present since at least libpng 1.0, and the `palette` aliasing since at least 1.2.1. Both affect all prior release lines `png_set_tRNS` sets `png_ptr->trans_alpha = info_ptr->trans_alpha` (256-byte buffer) and `png_set_PLTE` sets `info_ptr->palette = png_ptr->palette` (768-byte buffer). In both cases, calling `png_free_data` (with `PNG_FREE_TRNS` or `PNG_FREE_PLTE`) frees the buffer through `info_ptr` while the corresponding `png_ptr` pointer remains dangling. Subsequent row-transform functions dereference and, in some code paths, write to the freed memory. A second call to `png_set_tRNS` or `png_set_PLTE` has the same effect, because both functions call `png_free_data` internally before reallocating the `info_ptr` buffer. Version 1.6.56 fixes the issue."
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}
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],
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"source": {
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"advisory": "GHSA-m4pc-p4q3-4c7j",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-03-31T00:00:00+00:00",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3",
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"id": "CVE-2026-33416"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-04-01T03:55:17.603Z"
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}
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}
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]
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}
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} |